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Atmosphere 2015, 6(11), 1753-1770; doi:10.3390/atmos6111753

Seasonal Variations of Atmospheric Pollution and Air Quality in Beijing

1,2,* , 2,* and 2
1
College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China
2
Beijing Key Lab of Spatial Information Integration and Its Applications, Peking University, Beijing 100081, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Robert W. Talbot
Received: 30 September 2015 / Revised: 28 October 2015 / Accepted: 4 November 2015 / Published: 18 November 2015
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Abstract

New ambient air quality standards were released in 2012 and implemented in 2013 with real time monitoring data publication of six atmospheric pollutants: particulate matter (PM)2.5, PM10, O3, SO2, NO2 and CO. According to the new standards, Beijing began to publicize real-time monitoring data of 35 monitoring stations in 2013. In this study, real time concentrations of all six atmospheric pollutants of all 35 monitoring stations were collected from September 2014 to August 2015 to investigate the spatial and temporal pattern of the air quality and atmospheric pollutants. By comparing the annual and seasonal variations of all six pollutants’ concentrations, it was found that particulate matter, especially PM2.5, is still the major contributor to the deterioration of air quality in Beijing. Although the NO2 and O3 concentrations of some stations were still high under certain circumstances, their contributions to air quality index (AQI) were not comparable to those of PM2.5 and PM10. SO2 and CO concentrations have dropped to well below the qualification standards. Winter and autumn were the most polluted seasons for all pollutants except O3, whose concentrations are higher in summer. South and southeast stations were the most polluted compared with the rest of the stations, especially for particulate matter. Wind profile analysis with heavy pollution situations indicates that low speed southwest or east wind situations have the higher possibility of heavy pollution, suggesting that it is highly possible that long-range transportation of air pollutants from south or east neighboring provinces played an important role in the worsening air conditions in Beijing. View Full-Text
Keywords: air quality; air quality standards; PM2.5; PM10; atmospheric pollution air quality; air quality standards; PM2.5; PM10; atmospheric pollution
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Chen, W.; Yan, L.; Zhao, H. Seasonal Variations of Atmospheric Pollution and Air Quality in Beijing. Atmosphere 2015, 6, 1753-1770.

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